620427089 has 2 divisors, whose sum is σ = 620427090. Its totient is φ = 620427088.

The previous prime is 620427077. The next prime is 620427113. The reversal of 620427089 is 980724026.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 532686400 + 87740689 = 23080^2 + 9367^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620427089 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (620427029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310213544 + 310213545.

It is an arithmetic number, because the mean of its divisors is an integer number (310213545).

Almost surely, 2^620427089 is an apocalyptic number.

It is an amenable number.

620427089 is a deficient number, since it is larger than the sum of its proper divisors (1).

620427089 is an equidigital number, since it uses as much as digits as its factorization.

620427089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 620427089 is about 24908.3738730572. The cubic root of 620427089 is about 852.8976488717.

The spelling of 620427089 in words is "six hundred twenty million, four hundred twenty-seven thousand, eighty-nine".